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https://issues.apache.org/jira/browse/IGNITE-22638?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Pavel Pereslegin updated IGNITE-22638:
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Issue Type: Improvement (was: Task)
> Catalog compaction. Provide listener API on MvPartitionStorage with semantic
> onBeforeCheckpoint.
> ------------------------------------------------------------------------------------------------
>
> Key: IGNITE-22638
> URL: https://issues.apache.org/jira/browse/IGNITE-22638
> Project: Ignite
> Issue Type: Improvement
> Reporter: Pavel Pereslegin
> Priority: Major
> Labels: ignite-3
>
> To implement determination of the MinimalRequiredTime (IGNITE-22637), we need
> to provide an API with semantics similar to CheckpointListener with two
> methods beforeCheckpointBegin/afterCheckpointEnd.
> This listener will be used to publish a low watermark (timestamp) that
> ensures that raft log entries do not reference catalog history before that
> timestamp.
> In general, before a checkpoint we temporarily store the calculated
> timestamp, and after the checkpoint we publish that timestamp. Once
> published, this timestamp can be used to calculate the MinimalRequiredTime on
> the local node (this is out of current task scope, this task is only about
> listener API).
> This timestamp make sense only for "groups" with persistence, but it would be
> nice to have a common API (for example in MvPartitionStorage). So the
> implementation requires collaboration with the storage engine team.
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